Best Fallout 4 Side Quests

Ok, so I've done quite a few side quests in Fallout 4. My favorites are probably The Last Voyage of the U.S.S. Constitution, The Silver Shroud and The Secret of Cabot House.

So what are your favorites? There are a lot to choose from, and I'm probably gonna do some more side quests before continuing the main story, so I'd love to know about some good ones.

Also please keep the spoilers to a minimum please :)

The Last Voyage of the U.S.S. Constitution was amazing, but my favourite is the Detective Valentine quests because he's the best character in the game by far and so entertaining.